Allow Passive FTP in Cpanel Server with CSF

To enable Passive FTP in Cpanel Server running CSF firewall, check the passive ports used in /etc/pure-ftpd.conf

[root@server22 ~]# grep PassivePortRange /etc/pure-ftpd.conf 
PassivePortRange 49152 65534
[root@server22 ~]# 

As you can see pureFTPd use ports 49152 to 65534 for data transfer when in passive mode. You need to open these ports in CSF firewall.

Edit csf.conf

vi /etc/csf/csf.conf

Find line start with

TCP_IN =

Add ports ,49152:65534.

Here is what i have on a Cpanel server

TCP_IN = "20,21,22,25,53,80,110,143,443,465,587,993,995,2077,2078,2079,2080,2082,2083,2086,2087,2095,2096,49152:65534"

Restart csf firewall with

csf -r

See csf